iPhone的信号强度需要在消声室中进行。
An anechoic chamber is used to test the iPhone's signal strength.
根据降噪量要求对设备间采用简易消声室设计。
本文分别在半消声室和普通房间进行有源消声实验。
Active noise control experiments were performed in both a semi-anechoic chamber and an ordinary room.
本文分别在半消声室和普通房间进行有源消声实验。
Active noise control experiments were performed in both a semi-anechoic chamber and an ordinary room.
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